Leach <br/><br/>
Digital Principles and Applications 

 - 6th ed. 
 - New Delhi  Tata McGraw Hill  2006 
 - xxii+683 
<br/><br/><label>ISBN: </label>9780070601758 
<br/><br/><label>Dewey Class. No.: </label>621.395 LEA 6;47